Backend Developer (QA)

🌍 PagoNxt Payments | ✨ Your talent drives our future

PagoNxt Payments is Santander Group’s global payments platform, focused on providing tailored financial infrastructure for companies, banks, and fintechs — both inside and outside the Santander ecosystem. 

With operations in over 10 countries, our mission is clear: to simplify payments and empower businesses through secure, flexible, data-driven technology. 

We operate on a cloud-native architecture designed to scale and adapt to the needs of global organizations. Our platform supports international transactions, FX, multi-currency accounts, regulatory compliance, and fraud prevention — all under a unified approach. 

PagoNxt Payments combines the agility of a fintech with the reliability of a global bank. With teams across Spain, Brazil, Mexico, Portugal, the UK, and Germany, we are building the future of payments at global scale. 

✨ If you want to be part of the next generation of financial solutions — this is the place.

Imagine your future. Care for your career. Simplify your journey. 

This means you’ll have the opportunity to build impactful solutions, grow with real development opportunities, and thrive in a culture that values well-being, inclusion, and clarity. 
We combine flexibility, autonomy, and global collaboration — so you can focus on what matters, connect with purpose, and shape what’s next. 
 

You’ll find space to grow, real opportunities to lead, and a culture where everyone belongs and contributes. 

Are you ready to be a Nxter? 

📌 What you’ll do

• Develop microservices and test suites (unit, integration, regression).
• Automate certification of integrations (APIs, queues, files) and integrate into CI/CD.
• Design simulation and contract testing scenarios.
• Document results and contribute to continuous quality improvement.

✅ What we’re looking for

We are looking for a Backend Developer with a QA focus to build integration and regression tests and run certification using an integration testing framework based on simulation technologies (e.g., Hoverfly).

• 3+ years of experience in Java / Spring Boot.
• Experience with JUnit, Mockito, and simulation tools (e.g., Hoverfly).
• Knowledge of RabbitMQ, Kafka, IBM MQ, and REST APIs.
• Experience with Kubernetes (any flavor).
• English: B2 level or higher.

Technology Stack – reference framework (applies to this role)

• Public Cloud: AWS preferred; Azure/GCP acceptable.
• Kubernetes: EKS preferred; OpenShift/AKS/other flavors acceptable.
• Microservices: Java 17+, Spring Boot; Apache Camel desirable.
• Frontend: React. (For frontend roles, Microfrontends with Module Federation.)
• Other languages (desirable): Python, Shell scripting, Node.js.
• APIs & Security: Apigee Hybrid, OAuth 2.0, SSO/SAML, REST APIs; GraphQL desirable.
• Asynchrony & Messaging: Events and message-driven architectures; RabbitMQ, Kafka/Confluent, IBM MQ; AsyncAPI desirable.
• Datastores: PostgreSQL (or any SQL), NoSQL (MongoDB, Elastic).
• Caching/State: Redis.
• Object Storage: S3 (or compatible).
• CI/CD & SCM: Concourse, GitHub (or equivalents).
• Collaboration: Confluence, Jira.
• AI tools (desirable): GitHub Copilot, ChatGPT.

✅What can earn you extra points

• Experience in contract testing.
• Knowledge of Jsonata and Apache Camel.

🎯 What we offer

🩺 Medical insurance
🦷 Dental insurance
💪 Wellhub
🚑 Life insurance
💉 Annual healthcare
🚌 Transportation allowance
🍕 Meal voucher/food voucher
💰 Annual bonus
📚 Access to self-development programmes
🏢 Hybrid Collaborative environment: Successful candidate must be prepared to work 60% on site

📬 Next step

Apply and if you know someone who might be looking for this opportunity, share it.